△ABC的三边长为，，2，△A'B'C'的两边为1和，若△ABC∽△A'B'C'

△ABC的三边长为，，2，△A'B'C'的两边为1和，若△ABC∽△A'B'C'，则△A'B'C'的笫三边长为_______

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解析:略

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△ABC的三边长为，，2，△A'B'C'的两边为1和，若△ABC∽△A'B'C'